I purchased this generator because it was large enough to run our house including our 5 ton AC system all on propane! It came packed really well and it fired right up. The less than 5% THD was another reason I purchased this generator. Very pleased.

Once I removed the generator from the shipping box, I was able to assemble the front supports and attach the wheels in about 15 minutes. Since it was just me, it took a little bit longer. I was surprised to see that Westinghouse provided a spark plug wrench and an installation wrench in the box. That was super helpful and I didn't have to try and figure out what wrench to use on the bolts. It's currently raining, so I haven't had the chance to add fuel and fire it up. That can be another review.

The cables were on the battery when it came , but the electric start would not work , I called customer service and was told to Trace it back and I found it was not plugged in ! No where in the manual does it tell that there is a plug for the cables !

I received the wgen12000df in a relatively short time after ordering. After initial setup, this thing fired right up. It had no problem powering everything I threw at it (all house led house lights, fridge, sump pump, fans, tv's, 3 ton ac unit, ect). I very impressed with how the generator maintains the 60 hz at various loads.

Today 11/20/22 Eversource lines went down, this was the first time other than running generator and testing load on gasoline. I setup the LP tank that was just filled and started up the generator. It ran with a THD of roughly Less than 1% which 8s good. We had about 2,000 watts on continuous power use, however the refrigerator would start and cause a spike in THD from 60.4 Hz to + 60.8 which caused all my UPS systems to switch over. Once stabilized the UPS shut off. However about 2 hours into operation the engine idle down, Even though the low idle switch was off and caused severe power fluctuations. I immediately disconnect our 50 amp breaker but no change in engine speed. I checked the LP line and tank, no icing with about 80% of LP remaining. I then opened the fuel valve and the gasoline picked up engine speed a little bit the gas LP switch was still on LP, I switched to gasoline, no change, I then shut the LP tank off and the generator resumed full power. After the power outage ended 5 hours in I went back on line power, and disconnect the 50 amp generator breaker. With the fuel selector switch selected to gasoline I opened back up the LP tank which immediately choked the engine down. The is a severe problem with the fuel selector and LP service line in the generator. I need this fixed please ASAP as this is a life critical backup device.

I bought this on 8/26/2021, took about 3 weeks to arrive but well worth the wait. It came with everything needed to start it up except the fuel. I started it up today and will allow it to break in so I do not want to put too much of a load on it but will vary the load up to 4000 Watts for the first couple hours. I expected it to be much louder than it actually is, thank you for everyone that reviewed it and said it was very loud. I was pleasantly surprised that I could barely hear in inside the house. I have only ran it for about 30 minutes so far and time will tell but I'm super excited to have it.

I love this open frame portable generator with incredible power. I use it as back up power for my entire house. During power outages in summer months while the air-conditioning is in the most frequent use, my electric bill energy usage shows. 3500Watts but my old 8000Watt generator is not powerful enough to run the A/C and it trips every now and again when a certain combination of loads is running. That is why I now have this WGen20000c super powerful generator. I love it and it meets all my needs.

I purchased March 18 2022, received March 31 2022, stored in garage until June 10 2022 for initial startup & run...followed all startup procedures. Then ran under moderate load for about 5-10 mins then it shut down. Ran again in an hour or so w/o any load and it shut down within 5-10 mins. I then called customer service.

I had to wait a long time to find one of these in stock, but eventually received one a week ago. The (large) box was placed in my garage by the delivery company. Assembly was easy sitting on it's wooden pallet. Getting it off the pallet is a different proposition. Be sure that you appreciate how heavy 600lbs really is. You need something capable of lifting that. At the limit, four reasonably strong men could probably take a corner each and lift it while someone pulled the pallet out from beneath it. I used the front loader on my tractor with the bucket removed. The weight is the only negative so far, but I knew that when I bought it. On the topic of weight, I would be very reluctant to try to move this down any sort of hill/slope by hand. I initially put just over a gallon of gas in the tank. It wasn't enough. Given the size of the tank, I wasn't surprised. Added 5 gallons more, and it started with no problem. Is it noisy? Well, any generator that runs at 3600 RPM is going to be noisy, but I have a 6kw generator that I have been using to power essential items, such as freezer, water pump, family room lights, microwave, kettle etc. This is, subjectively, no noisier. It is obviously a different sound, twin cylinder vs single, large cooling fan etc. But placed in the same location where I used the old generator, with the doors closed, it is practically inaudible, as was it's predecessor. Adding a second socket to power the rest of the circuits I was able to power the entire house and run different appliances, water heater, etc. I also tried out the AC, which fired up ok. I don't dare switch it into heat-pump mode though, it has twin 20kw heat strips, and my thermostat is a little too liberal with their use, and there is no way to disable them. One comment on using the less expensive 50A plastic covered cables. I tried them out in 65°F weather, and even at that temperature, they are very stiff. Mine also have right angled plugs rather than straight which makes plugging them into the generator difficult unless you do it right. The wheel gets in the way if you try to plug in directly. The trick is to lay the cable behind the wheel and plug in the front/leftmost first, then lay the next on top of that and plug in the second. It's easy this way (see the attached photo). Alternatively, pay a lot more for rubber covered cables and/or find cables with straight plugs rather than right angled. It's also worth noting that the plastic covered cables become MUCH more flexible when they are warm, so you might consider storing them indoors rather than next to the generator.

Only complaint is it is transfer switch ready. But you have to use arduino or do some serious research to get the st switch wire functions to be able to connect this to a real ATS unit. I use an Eaton ATS and have an arduino to accept the remote start/stop wires on the ATS unit to send a three second ground out pulse to simulate the push of the start/stop button. A slight pain in the but if you don't know coding but there are enough open source fully functional code scripts that you can utilize to make it work. It makes no sense why they claim it to be transfer switch ready but then don't allow you to use the startup feature of a real automatic transfer switch. Instead they only offer the st switch which doesn't utilize the 50amp out, doesn't give you a one minute timer before cutting the generator on or off incase it's just a flicker vs an outage, and is way overpriced for its overall lack of usefulness given it wasn't even designed to be used at the recommended distance from your house. Sure you could use it in conjunction with an ATS to start the generator and just have a 9watt led light bulb plugged into it to get it to turn on and stay on but that does rob you of a few watts and I don't know the long term effects for using that and the 50amp plug. From what I have heard it can cause your breaker to trip on startup rendering the whole purpose of an ATS useless. They should make a plug in module for the ST switch plug that you could plug your industry standard two wire remote start/stop wires from an ATS switch. (Hey Westinghouse that suggestion is for you.). That said I got mine to work using an arduino and have my generator permanently mounted (wheels removed) on a concrete platform with an aluminum weatherproof case that is ventilated outside so there is no concern of it auto starting inside the garage. This portable unit provides enough power to run my living room, microwave and fridge, water heater, well pump, septic pump, my master bedroom, and one of my heat pump a/c units. I also went and had my heat pump breakers bridged so I can switch between my main level one my upstairs unit for night time running. I have my unit connected to a 250 gallon buried LPG tank but I do run the unit first and foremost with gasoline. I have a timer alarm that sends me a buzzer and I requires the fuel switch to be inside my ATS load center panel so I don't have to walk outside to switch the fuel. This generator is very good in that you can swap from gasoline to propane without restarting it. To avoid any surges I have three (yes three) whole home surge protectors. One is in the ATS load center, one is in my main service panel, and the other is on my service entry. It is overkill to a degree but if you have ever lost power you know that you will get a surge from the outage and switching to and from the generator power. Of course if you have a batter backup you can use an AGS module that starts the generator when your batter falls below the battery voltage threshold. You might be wondering why use a portable? Well when my surplus diesel finally died I quickly found that the availability of them was hard to come by and new diesels started at 15k. Even standby LPG generators start at 2k more than these amd usually less power. Plus these generators truly are the king of portables not to mention they are just one heck of a generator. They are so good while not recommended for medical equipment (no one officially or on the record recommends a generator for this purpose.). Many people around the world trust Westinghouse even over Hondas to power their small medical equipment. Just check the specs and you will see why. I love these so much I am saving to buy a second and run a second to permanently connect the other ac. Anyway highly recommend these.